1834 - Thomas Davenport of Vermont developed the first real electric motor ('real' meaning powerful enough to do a task) although Joseph Henry and Michael Faraday created early motion devices using electromagnetic fields.
Below is a more detailed usage of operating systems according to age group: 18 to 34 years old. Of all the smartphone users, 50% use Android as operating system, 43% use iPhone, 39% use Microsoft and 38% use RIM. Apparently, more users prefer Android.
Here's a look at some of the oldest machines that should be able to run Microsoft's latest operating system. The days of Windows being a system hog are gone. So modest are the requirements for Windows 10, you may be able to run it on machines that shipped with Windows Vista eight years ago.